Starz T/A 17

iTrader: (6)

I have a 2000 T/A M6 with a lid and SLP Loud mouth. Im racing a 97 LT1 A4 with a intake, catback, 3:73 gears, and Midlenght headers. Were going to be racing in the quarter mile at the track. He wants to put money on it and was wondering what everyone thinks and how much you guys think I should put on it?

2K2WS6TA

iTrader: (2)

When you say intake, do you mean intake manifold
I think you'll take him, if you don't blow the start, but if you do you should be able to catch up top.
I beat a 95 Firehawk with a catback, with my T/A with a lid & catback

Starz T/A 17

iTrader: (6)

Yeah by intake just a cold air intake not the whole manifold, the equivalint to our lid

BLKWS.6

Dont mess up the launch and you should pull up top, but he will kill you out of the hole, if my 2.73 A4 LT1 would beat A4 LS1's out of the hole, he should get you, do 1/4 NOT 1/8!!!! (I used to pull LS1's to about 50mph or so, tehn they walked...)

DeltaT

iTrader: (5)

Yeah, if he can hook he'll have a very strong charge, with those 3.73's and that deep 3.06 4L60E first gear.

What is he tuning with? Have you seen his car run?

If he is tuned but he has no cam, I think you will catch up to him before 1/4.

Jim

kennyxg

iTrader: (1)

You better be careful maybe he has a stall ? longtubes ,stall with gears he could touch 13.0's 12.90's . Don't know any one in my neck of the woods with an Lt1 calling out Ls1's.

300bhp/ton

I don't get that. The Ls1 makes good low end grunt (more than a Lt1 to my knowledge).

Plus the 0-60mph times are way better for the Ls1 (upto a second better or so, depending on where you read). but by the 1/8 you should be pulling 80'ish.

Not saying it ain't true, but it doesn't add up to me.

Did the Lt1's have different internal gear ratio's that make it feel quicker off the line??

imnotplutonium

iTrader: (4)

As far as I know, the lt1 is the torque monster, easily taking most ls1's off of the line if it can get traction, but as far as top end it is no comparison, the ls1 is much faster at high speeds

kennyxg

iTrader: (1)

Depends on the gear ratio. a 323 Lt1 could pull a highway geared Ls1 to I would say 45mph maybe 50 and then the Ls1 would pass you like you are standing still.

300bhp/ton

it still doesn't add up to me.

I've just been doind a bit of looking and 5.7 seconds 0-60mph seems pretty common for the M6 Lt1.

Where as even a A4 with 2.73 rear LS1 will be low 5's (5.3), and I've seen 01+ M6's rated as low as 4.8 seconds 0-60mph.

Here's a dyno graph from a stock 99 Ls1 (found in the dyno forum):

As you can see the torque curve is very flat, so although the Ls1 makes PEAK torque high in the revs it is producing almost the same torque at just over 2000rpm. Even at 1500rpm it's still pretty damn impressive.

Anyone have a dyno graph for a STOCK Lt1, I really can't beleive it's producing as much torque as an Ls1 in the low rpms.

imnotplutonium

iTrader: (4)

dont lt1's have like 275 hp, and 325 or so torque at the crank... hmmm.... honestly i thought ls1's had less torque than that but dynos dont usually lie. dont know man

300bhp/ton

ok, in 1993 the 5.7 LT1 prodced 325lb ft @ 2400rpm, so yes the PEAK is very low.

But according to the dyno sheet above the Ls1 is producing 290lb ft of torque at 2400rpm. But that's at the wheels. I think it's fairly safe to say (assuming this dyno graph is typical of a STOCK Ls1) that a Ls1 would be producing as much or more torque than a STOCK Lt1 no matter the rpm.

I do agree a 3.23 rear compared to 2.73 will make a difference. But i doubt it can potentially over come what many consider to be 50-75bhp difference in STOCK output.

kennyxg

iTrader: (1)

No offense but how common are Lt1s in England?

300bhp/ton

probably slightly more common than Ls1's, but most of them will be in Corvettes.

Having said that, my mate who runs a paint shop has a Lt1 Corvette (93 I think) and a Lt1 Z28 (97) both auto's and both mildly modded.

kennyxg

iTrader: (1)

I'm not desputing the fact that Ls1s make more power , but dont you see thats the whole thing about it . My friend has an 01 Ls1 with the highway gears a4. But the vehicle will smoke the tires from a standing start. My Lt1 wont smoke the tires from the line it just takes off. There for out accelerating the Ls1 momentarily.Of course the Ls1 catches and passes the Lt1 without a doubt.Now there are some old Lt1s out there that aren't running to full potential and i'm not saying the Lt1s always get to 50 faster. Ls1 with drag radials stock for stock should put the Lt1 out with no problem.

300bhp/ton

or maybe a better driver who doesn't roast the tyres off the start line???

I hear what you say, but by that logic an automatic Mustang 4.6 should also beat a Ls1 off the line because it doesn't spin the wheels.

kennyxg

iTrader: (1)

My old Lt1 has recorded 1.9 60ft on reg radials ,my 90 Mustang has gone 1.88 60ft on street tires . Driver has alot to do with it but the hell with fancy theory's it's when you start to apply the theory to action when you find you can't beleive everything you read.

Starz T/A 17

iTrader: (6)

His car is untuned and a stock LT1 cam

slowmofo

iTrader: (6)

you should beat him, unless you kill your self off the line. Your at the track so Im guessing reaction time will also be a factor??

mrbobo

I predict he will get you off the line, you will pass him after that. Echoing others- make sure you get full 1/4 mile run.